The "valid" example in XML Signature Syntax and Processing

I find some problems in the last "valid example" (signature-example-dsa.xml)
in Section 9 of  XML Signature Syntax and Processing (Second Edition) .


1)
	 <CanonicalizationMethod
Algorithm="http://www.w3.org/TR/2000/WD-xml-c14n-20000710">

This URI is obsolete.

2)

	 <SignatureMethod Algorithm="http://www.w3.org/2000/09/xmldsig#dsa">

"-sha1" is missing.


3)

		  <Transform Algorithm="http://www.w3.org/2000/09/xmldsig#null"/>

No such algorithms.


4)

        <P>...</P><Q>...</Q><G>...</G><Y>...</Y>

This is inappropriate as a "Valid example" (the title of Section 9).

Cheers,
Makoto